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git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1233 632fc199-4ca6-4c93-a231-07263d6284db
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DRC
2014-04-15 03:07:44 +00:00
parent 8acdd385cb
commit 2f59b4eac1
1 changed files with 5 additions and 5 deletions
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ChangeLog.txt
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@@ -42,11 +42,11 @@ later. OS X 10.4 "Tiger" is no longer supported.
[5] The Huffman encoder now uses clz and bsr instructions for bit counting on
ARM platforms rather than a lookup table. This reduces the memory footprint
by 64k, which may be important for some mobile applications. Out of four
Android devices that were tested, two demonstrated a small loss (~3-4% on
average) with ARMv6 code and a small gain (also ~3-4%) with ARMv7 code when
enabling this new feature, but the other two devices demonstrated a
significant performance gain across the board (~10-20%.) Actual mileage may
vary.
Android devices that were tested, two demonstrated a small overall performance
loss (~3-4% on average) with ARMv6 code and a small gain (also ~3-4%) with
ARMv7 code when enabling this new feature, but the other two devices
demonstrated a significant overall performance gain with both ARMv6 and ARMv7
code (~10-20%.) Actual mileage may vary.
1.3.1